[one-users] DHCP and OpenNebula

Fri May 9 05:01:56 PDT 2014

Hello Jaime,

I don't have a hook for that. It was an idea I came up with for this
particular use case. I don't use DHCP with OpenNebula.

Anyway, good question though. I have made a little bit of research about
OMAPI
and how can one use it from different programming languages.

Ruby:
https://github.com/pikelly/dhcpIT
http://www.ruby-doc.org/gems/docs/e/esxmagicwand-0.1.2/DHCP/Server.html

Python:
https://code.google.com/p/pyomapic/
https://github.com/jof/pypureomapi

Perl:
http://search.cpan.org/~jhthorsen/Net-ISC-DHCPd-0.14/lib/Net/ISC/DHCPd/OMAPI.pm

Bash:
http://www.jedi.be/blog/2010/12/08/automating-dhcp-management-with-omapi/(also
has a Java example)
http://comments.gmane.org/gmane.network.dhcp.isc.dhcp-server/11411

Hope it helps :).

Best,
Valentin

On Fri, May 9, 2014 at 12:17 PM, Jaime Melis <jmelis at opennebula.org> wrote:

> Valentin,
>
> I actually hadn't thought of that, it's a great idea :) You could even map
> the other context values, not just the IP!
>
> Do you have this hook per chance?
>
> cheers,
> Jaime
>
>
> On Fri, May 9, 2014 at 10:12 AM, Valentin Bud <valentin.bud at gmail.com>wrote:
>
>> Hello Christophe,
>>
>> If you really want to use DHCP in combination with OpenNebula I suggest
>> you
>> take a look over omshell [1].
>>
>> With a simple hook you could enter the required DHCP host entry via OMAPI
>> and your VM will pick it up at boot.
>>
>> [1]: http://www.linuxcommand.org/man_pages/omshell1.html
>>
>> Best,
>> Valentin
>>
>>
>> On Thu, May 8, 2014 at 6:46 PM, Ionut Popovici <ionut at hackaserver.com>wrote:
>>
>>>  NAT don't have anything how you manage your inside network or
>>> control'it ..
>>> DHCP will not masquerade your ip's
>>> DHCP is Dinamyc Host Control Protocol this way you cand control the
>>> hosts .. or you can control manualy configuring each host or use
>>> Conextualization scripts to have ip's form your opennebula lesses
>>> http://archives.opennebula.org/documentation:rel4.4:cong
>>> On 5/8/2014 6:31 PM, Christophe Duez wrote:
>>>
>>> Owkey like that I know but I thought there was a script or something. so
>>> that you don't need to type all the IP's
>>> The problem is that I have only 1 ip-address that has connection to the
>>> internet.
>>> this ip is dedicated to a vm running NAT and DHCP so the other VM's will
>>> get an IP from this VM's DHCP  and can pass through the NAT for connection
>>> to the outside world.
>>> having to put all the IP's in the DHCP config file is crazy work not?
>>>
>>>
>>> On Thu, May 8, 2014 at 4:41 PM, Ionut Popovici <ionut at hackaserver.com>wrote:
>>>
>>>>  On 5/8/2014 5:09 PM, Christophe Duez wrote:
>>>>
>>>> I know of the mac address of opennebula but I don't know how to enter
>>>> this in a dhcp config file :/
>>>>
>>>>   isc-dehcp-server config .
>>>> /etc/dhcp/dhcpd.conf
>>>>
>>>> subnet 10.200.0.0 netmask 255.255.255.224 {
>>>>   range 10.200.0.2 10.200.0.30;
>>>>   option domain-name-servers 10.200.0.1;
>>>>   option routers 10.200.0.1;
>>>>   option broadcast-address 10.200.0.31;
>>>>   default-lease-time 600;
>>>>   max-lease-time 7200;
>>>> }
>>>>
>>>> host host-2 {
>>>>   hardware ethernet 02:00:0a:c8:00:02;
>>>>   fixed-address 10.200.0.2;
>>>> }
>>>> host host-3 {
>>>>   hardware ethernet 02:00:0a:c8:00:03;
>>>>   fixed-address 10.200.0.3;
>>>> }
>>>> host host-4 {
>>>>   hardware ethernet 02:00:0a:c8:00:04;
>>>>   fixed-address 10.200.0.4;
>>>> }
>>>>
>>>> ............
>>>>
>>>> host host-30 {
>>>>  hardware ethernet 02:00:0a:c8:00:1E;
>>>>  fixed-address 10.200.0.30;
>>>>
>>>> }
>>>>
>>>>
>>>> On Thu, May 8, 2014 at 3:26 PM, Ionut Popovici <ionut at hackaserver.com>wrote:
>>>>
>>>>>  Or you can make you dhcp server with pools and add fixed address via
>>>>> mac
>>>>> Because opennebula use very nice mac asingment based on ip transformed
>>>>> on hexa.
>>>>> Default mac for opennebula is 02:00 and other 4 hexa digits are ip
>>>>> address decimal tranformed on hexa.
>>>>> for ip 10.10.10.10 opennebula will use mac
>>>>> 02:00:0a:0a:0a:0a
>>>>> or ip 10.10.0.1 = 02:00:0a:0a:00:01
>>>>> with this you can easy make an dhcp lesses for your networks
>>>>>
>>>>> On 5/8/2014 4:04 PM, Christophe Duez wrote:
>>>>>
>>>>> But I need to know how to do it. not simply install and work....
>>>>>
>>>>>
>>>>> On Thu, May 8, 2014 at 2:58 PM, Гусев Павел <pgusev at qsoft.ru> wrote:
>>>>>
>>>>>>  I think you must us Virtual Router (from Marketplace) with DHCP
>>>>>> daemon
>>>>>>
>>>>>> --
>>>>>> С уважением,
>>>>>> Гусев Павел
>>>>>> Руководитель отдела системного администрирования
>>>>>>
>>>>>> QSOFT | Ведущий web-интегратор
>>>>>>
>>>>>> офис 7(495) 771-7363 #110 | моб. 7(926) 850-1108
>>>>>> pgusev at qsoft.ru
>>>>>> Москва, Авангардная улица, 3  |  qsoft.ru
>>>>>> San Francisco, 222 Columbus Ave |  qsoftus.com
>>>>>>
>>>>>>
>>>>>>
>>>>>> 08.05.2014, 16:25, "Christophe Duez" <
>>>>>> christophe.duez at student.uantwerpen.be>:
>>>>>>
>>>>>>  Hello,
>>>>>> Is it possible that a virtual DHCP-server gives ip addresses to the
>>>>>> other VM's and that OpenNebula will take over this ip-address in sunstone?
>>>>>> Because now my dhcp gives the new VM an IP-address but in the
>>>>>> sunstone interface the VM has an other IP given by the Virtual Network
>>>>>> template
>>>>>>
>>>>>> can this be changed?
>>>>>>
>>>>>> --
>>>>>> Kind regards,
>>>>>> Duez Christophe
>>>>>> Student at University of Antwerp :
>>>>>> Master of Industrial Sciences: Electronics-ICT
>>>>>>
>>>>>> E christophe.duez at student.uantwperen.be
>>>>>> L linkedin duez-christophe<http://www.linkedin.com/pub/duez-christophe/74/7/39>
>>>>>>      ,
>>>>>>
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at lists.opennebula.org
>>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>  --
>>>>> Kind regards,
>>>>> Duez Christophe
>>>>> Student at University of Antwerp :
>>>>> Master of Industrial Sciences: Electronics-ICT
>>>>>
>>>>> E christophe.duez at student.uantwperen.be
>>>>> L linkedin duez-christophe<http://www.linkedin.com/pub/duez-christophe/74/7/39>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing listUsers at lists.opennebula.orghttp://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>  --
>>>> M.v.g.
>>>> Duez Christophe
>>>>
>>>> T +32497552655
>>>> E duez_christophe at hotmail.com
>>>> S christophe.duez
>>>> L linkedin duez-christophe<http://www.linkedin.com/pub/duez-christophe/74/7/39>
>>>>
>>>>
>>>>
>>>
>>>
>>>  --
>>> M.v.g.
>>> Duez Christophe
>>>
>>> T +32497552655
>>> E duez_christophe at hotmail.com
>>> S christophe.duez
>>> L linkedin duez-christophe<http://www.linkedin.com/pub/duez-christophe/74/7/39>
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.opennebula.org
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>
>>>
>>
>>
>> --
>> Valentin Bud
>> http://databus.pro | valentin at databus.pro
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>>
>
>
> --
> Jaime Melis
> Project Engineer
> OpenNebula - Flexible Enterprise Cloud Made Simple
> www.OpenNebula.org | jmelis at opennebula.org
>

-- 
Valentin Bud
http://databus.pro | valentin at databus.pro
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